/
filter_test.go
256 lines (214 loc) · 6.57 KB
/
filter_test.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
package gofilter
import (
"net"
"testing"
)
func init() {
// filterDebug = 5
// filterErrorVerbose = true
RegisterField("f_uint", FT_UINT)
RegisterField("f_uint8", FT_UINT8)
RegisterField("f_uint16", FT_UINT16)
RegisterField("f_uint32", FT_UINT32)
RegisterField("f_uint64", FT_UINT64)
RegisterField("f_int", FT_INT)
RegisterField("f_int8", FT_INT8)
RegisterField("f_int16", FT_INT16)
RegisterField("f_int32", FT_INT32)
RegisterField("f_int64", FT_INT64)
RegisterField("f_string", FT_STRING)
RegisterField("f_ipv4", FT_IP)
RegisterField("f_ipv6", FT_IP)
RegisterField("ip.addr", FT_IP)
RegisterField("ip.src", FT_IP)
RegisterField("ip.dst", FT_IP)
RegisterField("f_mac", FT_MAC)
RegisterField("f_bool.1", FT_BOOL)
RegisterField("f_bool.2", FT_BOOL)
RegisterField("f_float32", FT_FLOAT32)
RegisterField("f_float64", FT_FLOAT64)
RegisterField("f_string.1", FT_STRING)
RegisterField("f_string.2", FT_STRING)
RegisterField("f_string.3", FT_STRING)
}
func TestFilterRegisterFilter(t *testing.T) {
err := RegisterField("f_uint", FT_UINT)
if err != ErrFieldExist {
t.Error("Must be error: field is already registered")
}
}
func TestFilterParseUnknownField(t *testing.T) {
_, err := NewFilter("xxx && udp.srcport==12")
if err == nil {
t.Error("Must be error: Field with name \"xxx\" does not exists")
}
}
func TestFilterFieldName(t *testing.T) {
_, err := NewFilter("f_uint")
if err != nil {
t.Error(err)
}
}
func TestFilterParseUint(t *testing.T) {
_, err := NewFilter("f_uint==4294967295 && f_uint8==255 && f_uint16==65535 && f_uint32==4294967295 && f_uint64==18446744073709551615")
if err != nil {
t.Error(err)
}
_, err = NewFilter("f_uint==0 && f_uint8==0 && f_uint16==0 && f_uint32==0 && f_uint64==0")
if err != nil {
t.Error(err)
}
}
func TestFilterParseInt(t *testing.T) {
_, err := NewFilter("f_int==2147483647 && f_int8==127 && f_int16==32767 && f_int32==2147483647 && f_int64==9223372036854775807")
if err != nil {
t.Error(err)
}
_, err = NewFilter("f_int==-2147483648 && f_int8==-128 && f_int16==-32768 && f_int32==-2147483648 && f_int64==-9223372036854775808")
if err != nil {
t.Error(err)
}
}
func TestFilterParseString(t *testing.T) {
_, err := NewFilter("f_string==\"text\" or f_string contains 12 && f_string==01:23:45:67:89:ab:AB:cd:ef")
if err != nil {
t.Error(err)
}
}
func TestFilterParseRegexp(t *testing.T) {
_, err := NewFilter("f_string matches \"gl=se$\"")
if err != nil {
t.Error(err)
}
}
func TestFilterParseIP(t *testing.T) {
_, err := NewFilter("f_ipv4 == 192.168.1.1 or f_ipv6==::1 or f_ipv6==2001:db8::1")
if err != nil {
t.Error(err)
}
}
func TestFilterParseMac(t *testing.T) {
_, err := NewFilter("f_mac == 01:23:45:67:89:ab:cd:ef or f_mac == 0123.4567.89ab.cdef")
if err != nil {
t.Error(err)
}
}
func TestFilterParseBool(t *testing.T) {
_, err := NewFilter("f_bool.1 == true or f_bool.2 != false")
if err != nil {
t.Error(err)
}
}
func TestFilterParseFloat(t *testing.T) {
_, err := NewFilter("f_float32 == 123.345 or f_float64 != 74123412341234.123412341243")
if err != nil {
t.Error(err)
}
}
// Apply filters
func TestFilterApplyIntUint(t *testing.T) {
f, err := NewFilter("f_int == 1 and f_int8 == 13")
if err != nil {
t.Fatal(err)
}
if !f.Apply(map[string]interface{}{"f_int": 1, "f_int8": int8(13)}) {
t.Error("Packet must pass")
}
if f.Apply(map[string]interface{}{"f_int": 1, "f_int8": int8(14)}) {
t.Error("Packet must not pass")
}
// field with multiple values
f2, err := NewFilter("f_int != 2")
if err != nil {
t.Fatal(err)
}
if !f2.Apply(map[string]interface{}{"f_int": []int{1, 3, 4}}) {
t.Error("Packet must pass")
}
if f2.Apply(map[string]interface{}{"f_int": []int{1, 2, 3, 4}}) {
t.Error("Packet must not pass")
}
}
func TestFilterApplyString(t *testing.T) {
f, err := NewFilter("f_string.1 == \"1\" and f_string.2 == 47:45:54 and f_string.3 == abc123")
if err != nil {
t.Fatal(err)
}
if !f.Apply(map[string]interface{}{"f_string.1": "1", "f_string.2": "GET", "f_string.3": "abc123"}) {
t.Error("Packet must pass")
}
if f.Apply(map[string]interface{}{"f_string.1": "2", "f_string.2": "GET", "f_string.3": "abc123"}) {
t.Error("Packet must not pass")
}
f2, err := NewFilter("f_string.1 contains \"1\" and f_string.2 contains 47:45:54 and f_string.3 contains abc123")
if err != nil {
t.Fatal(err)
}
if !f2.Apply(map[string]interface{}{"f_string.1": "asdf1asdf", "f_string.2": "text - GET ---", "f_string.3": "asf fffabc123"}) {
t.Error("Packet must pass")
}
if f2.Apply(map[string]interface{}{"f_string.1": "test234test", "f_string.2": "xxxxETyyy", "f_string.3": "abc125"}) {
t.Error("Packet must not pass")
}
}
func TestFilterApplyIP(t *testing.T) {
f, err := NewFilter("f_ipv4 > 192.168.1.0 and f_ipv6 !=2001:db8::1")
if err != nil {
t.Fatal(err)
}
if !f.Apply(map[string]interface{}{"f_ipv4": net.ParseIP("192.168.100.1"), "f_ipv6": net.ParseIP("2001:db8::2")}) {
t.Error("Packet must pass")
}
if f.Apply(map[string]interface{}{"f_ipv4": net.ParseIP("172.16.0.1"), "f_ipv6": net.ParseIP("2001:db8::1")}) {
t.Error("Packet must not pass")
}
// field with multiple values
f2, err := NewFilter("ip.addr != 2001:db8::1")
if err != nil {
t.Fatal(err)
}
if f2.Apply(map[string]interface{}{
"ip.addr": []net.IP{
net.ParseIP("192.168.100.1"),
net.ParseIP("2001:db8::1")}},
) {
t.Error("Packet must not pass")
}
// compare CIDR
f3, err := NewFilter("ip.src==192.168.0.0/16 and ip.dst==192.168.0.0/16")
if err != nil {
t.Fatal(err)
}
if !f3.Apply(map[string]interface{}{"ip.src": net.ParseIP("192.168.100.1"), "ip.dst": net.ParseIP("192.168.1.1")}) {
t.Error("Packet must pass")
}
if f.Apply(map[string]interface{}{"ip.src": net.ParseIP("172.16.0.1"), "ip.dst": net.ParseIP("10.0.0.1")}) {
t.Error("Packet must not pass")
}
f4, err := NewFilter("ip.src >= 192.168.0.0/16")
if err != nil {
t.Fatal(err)
}
_, ipnet, _ := net.ParseCIDR("192.168.0.12/16")
if !f4.Apply(map[string]interface{}{"ip.src": ipnet.IP, "ip.dst": net.ParseIP("192.168.1.1")}) {
t.Error("Packet must pass")
}
if f4.Apply(map[string]interface{}{"ip.src": net.ParseIP("172.16.0.1"), "ip.dst": net.ParseIP("10.0.0.1")}) {
t.Error("Packet must not pass")
}
}
func TestFilterApplyMac(t *testing.T) {
// compare contains
f, err := NewFilter("f_mac contains 23:45")
if err != nil {
t.Fatal(err)
}
h1, _ := net.ParseMAC("01:23:45:67:89:ab:cd:ef")
if !f.Apply(map[string]interface{}{"f_mac": h1}) {
t.Error("Packet must pass")
}
h2, _ := net.ParseMAC("01:23:44:67:89:ab:cd:ef1")
if f.Apply(map[string]interface{}{"f_mac": h2}) {
t.Error("Packet must not pass")
}
}